Furnace.



W. E. ADAMS. FURNAGE.

APPLIOATION FILED suma. 191s.

1,090,957. Patented Mar. 24, 1914 2 SHEETS-*SHEET 1.

.z' w fia W. E. ADAMS.-

FURNAGE.

APPLIOATION FILED-SEPT. a, 191s.

Patented Mar. 24, 1914.

2 SHEETS-SHEET 2.

WILLIAM E. ADAMS, OF PHILADELPHIA, PENNSYLVANIA.

FURNACE.

Leonesa.

To all whom t may concern:

Be it known that I, `W1LLIAM E. ADAMS, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Furnaces, of which the following is a speci-` fication.

My invention relates to improvements in furnaces, and more particularly to improved grate bars and mounting therefor, the object of the invention being to provide improved grate bars which are supported upon pipes constituting inlets for steam and air, and also supported upon movable devices which compensate for expansion and contraction.

A further object is to provide in a furnace fire box, angle bars elastically connected and supporting the ends of grate bars to allow the grate bars to expand and contract.

A further object is to provide improvements of this character which permit a single grate bar to be readily removed when bro-ken or worn and replaced by a new bar without destroying the others.

lith these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinafter described and pointed o-ut in the claims.

In the accompanying drawings: Figure l is a sectional plan view illustrating my improvements. lfig. 2 is a view in section on the line 2 2 of Fig. 1. Fig. 3 is an enlarged end viewof one of the wall boxes 2. Fig. e is a view in section on the line L /1 of Fig. 8. Fig. is a view in end elevation of one of the wall boxes 3. Fig. 6 is a view in section onthe line 6--6 of Fig. 5, and Fig. 7 is a. perspective view of one of the grate bars.

1, 1, represent the side walls of a furnace which are provided at the fire box or rather at the grate line with wall boxes 2 and 3. Two wall boxes 3 are located in each wall, and are of general rectangular form having cap pieces t located thereon, and through these boxes 3, relatively large horizontal pipes 5 project.

The pipes 5 are located in the respective ends of the fire box 6, and one being located adjacent the front wall 7, and the other adjacent the bridge wall 8. The pipes Speciication of Letters Patent.

Application filed September 9, 1913.

Patented Mar. 2d, 1914i. Serial No. 788,825.

5 are provided with a line of perforations 9, and said pipes are connected to a steam and air blast pipe 11a, so that steam and air may be forced through the lire box whenever forced draft is desired.

It will be noted that the pipe 5 in the front part of the fire box discharges forwardly as well as upwardly, while the pipe 5 adjacent the bridge wall discharges rearwardly and upwardly.

1n the walls 1, midway between'the boxes 3, boxes are located. The boxes 2 have covering plates 10 which are angular in form so as to house the respective ends of angle bars 11. These angle bars 11 are provided at intervals with openings for the reception of bolts 12EL having nuts 13 thereon, and around the bolts between the angle bars, coiled springs 13L are located and exert pressure on the bars, tending to press them apart.

On the bars 11, and on the pipes 5, my improved grate bars 12 are supported. All of these grate bars are constructed precisely alike, and one of them is shown in perspective in Fig. 7, in which it will be noted that the grate bar at one end is provided in its under face with a notch 15, and at its other end is provided in its under face with an angular recess 1G forming a projecting finger 17.

rllhe notch 15 is to receive the angle bar l1, and the tongue 17 is to rest upon the pipe Enlargements 19 are located at opposite sides of the bars which insure a free draft through the bars, and said bars are arranged as shown in Fig. 1, the notched ends 15 located at the center of the fire box and the fingers 18 at the ends of the fire box supported on the pipes 5.

The grate bars are free to expand or contract and at the same time have a firm bearing at both ends, the springs 13a permitting the bars 11 to be moved, and the fingers 16 slide freely on the pipe 5.

As the bars 12 expand, if their movement in one direction is stopped by the wall of the lire box, the bars 11 will be moved toward each other against the action of the springs 13LL to take up this expansion, and prevent bending or breaking of the grate bars.

If one of the bars is injured, it may be readily removed and a new one replaced without disturbing the other bars.

Vilhilc I have illustrated my improvements in connection with a single fire box, it is to be understood that the same might be used in connection with a series of re boxes located side by side in which case the pipes 5 might be utilized for any numberl of. fire boxes. j

Various slight changes might be made in the general form and arrangement of parts described without departing from my inven-` tion, and hence I do not limit myself to the f precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

I-Iaving thus described my invention, what I claim as new and desire to secure by Let- 2. In a furnace, the combination 'withA side walls, a front wall, and a bridge wall connecting the side walls, of draft pipes projecting through the side walls adjacent the front wall and the bridge wall, parallel bars supported at their ends in the side walls and movable longitudinally of the furnace and relative to each other, elastic means connecting said bars, and grate bars supported at their inner ends on said first-mentioned bars and at their outer ends on said pipes, substantially as described.

3. In a furnace, the combina-tion with side walls, a front wall, and a bridge wall connecting the side walls, of draft pipes projecting through the side walls adjacent the front wall and the bridge wall, angle bars supported midway between the pipes and movable longitudinally of the furnace and relative to each other,bolts pro-jected through the angle bars, springs around the bolts exerting pressure on the angle bars, and grate bars supported on the angle bars and on the pipes, substantially as described.

4. In a furnace, the combination with side walls, a front wall, and a bridge wall connecting the side walls, of draft pipes projecting through the side walls adjacent the front wall and the bridge wall, angle bars supported midway between the pipes and movable longitudinally of the furnace and relative to each other, Vbolts projected through the angle bars, springs around the bolts exerting pressure 'onythe angle bars, and grate bars having notched ends supported on the angle bars and having fingers at their other ends supported on the pipes, substantially as described.

5. In a furnace, the combination with side walls, a front wall, and a bridge -wall connecting the side walls, of draft pipes projecting through the side walls adjacent the front wall and the bridge wall, three boxes located in each side wall, two of said boxes in each wall supporting the said pipes, angle bars supported in the intermediate boxes and movable longitudinally of the furnace and relative to each other, elastic means pressing the angle bars apart, and grate bars supported on the angle bars and on the pipes, substantially as described.

6. In a furnace, thecombination with side walls, a front Wall, and a bridge wall connecting the side walls, of draft pipes projecting through the side walls adjacent the front wall and the bridge wall,- three boxes located in each side wall, two of said boxes in each wall supporting the saidvpipes, angle bars supported in the intermediate boxes and movable longitudinally of theV furnace and relative to each other, elasticv means pressing the angle bars .apart,'grate bars supported on the angle bars and on the pipes, each grate bar entirely independent of every other grate bar, and each grate bar having enlargements at opposite sides, substantially as described.

Inv testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM E. ADAMS.

Vitnesses:

CI-IAs. E. Por'rs, M. E. Drr'rUs.

Copies of this patent may be obtained for Ive cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

